Means for securing wheel-disks to hubs



F. .I. KEEGAN. MEANS FOR sgcumue WHEEL msxs T0 Hues.

APPLLCATION FILED MAR. 12, 1919.

Patented Feb. 3,1920.

2 SHEETS-SHEET 1.

F. J. KEEGAN, NEANS FOR SECURING WHEEL DISKS T0 HUBS.

APPLICATION BLED MAR; 12, I919- Patented Feb. 3

2 SHEETS-SHEET 2-- .1 4 STATES PATENT orricn FRANK JOH N KEEGAN, OF COVENTRY, ENGLAND, ASSIGNOR TO THE DUNLOBRU'BBEB COMI'ANY, LIMITED, OF WESTMINSTER, LON-D ON, ENGLAND.

MEANS FOR- SEGURING WHEEL-DISKS TO HUIBS.

assa-52a."

Specification of Letters Patentl Application filed March 12,1919. Serial No.- 2 82,180. p e

To all whom it may concern:

Be itknown that I, FRANK JOHN KEEGAN,

a subject of the King ofGreat' Britain, re

. curing means and is especially intended for securing: the disks of disk wheels 'to the wheel hubs, although it is capable otbeing used for coupling or securlng any similar diskor plate-like .members together so that the may be rotated as a single unit. In vehicle wheels of the type -in which a single disk carrying the wheel rim is bolted or similarly secured to a flange on the hub, it is usual to make thedisk thicker at its central part,-inorder to provide sufiicient bearin surface for the disk on the hub, and to afiordia reasonable driving surface for the securing bolts which extend through the.

disk and the hub flange. The chief object, of thepresent invention is to obviate the necessity of providing the thickened centralpart onithe disk and to employ a disk which is comparatively thin at the central part, thereby reducing the Weight and efiecting economy in the amount of metal employed.

According to this invention all the members to be secured together, which for examp-le'in the case of a wheel, may be the disk or disks and the hub flange and if desired a retaining plate or ring, are formed or provided with lateral cylindrical projections, bosses, or recesses which interfit or inter-engage so that when the said members are held against lateral displacement, the said cylindrical projections or thelike constitute mutual bearing surfaces to take up torque and rotational strains durmtg For example in the case 0 a single disk wheel the lateral cylindrical projections or bosses are formed or provided on the disk and are adapted to be fitted into correspondingparts, forming cylindrical recesses 1n the hub flange. In the case of a double disk' wheel in which each disk may carry a separate rim or tire, each disk may be provided with-cylindrical projections or bosses on each side thereof,-which cylindrical projections or bo ses-are so' constructed .and' ar-' ranged that those onionev side of one disk the rotation. v

\ tel-engaging, cylindrical projections, bossespractically relieved of this functionandnamely, the two disks and the hub flange I then being secured together against lateral displacement'by bolts or the like. The ends of the aforesaid cylindrical projections, bosses or the like which are exposed when the various members are placed together I may. !be adapted to be clamped between the head of a bolt extending through the inter the threaded end of the bolt. In some cases we may provide a retaining or bearing ring which issuitably shaped tobear against the outer surface of the disk of a single disk" Y wheel or the outer disk of a double disk-n" wheel so as to constitute a bearing surface 2 against which'the nuts or heads on the securing bolts hear when the various members i are secured together. By means of this in- '80 vention we obviate the necessity of thiekem.

ing the central part of the disk as the interfitting cylindrical projections, bosses 'orthe like afl'ord ample bearing surfaces. which give mutual support to'take the radial load and torque strains during rotation, so that we may employ thin disks to reduce the weight and effect economy in metal and we may of course strengthen the thin disks lat.-' erally by forming therein circumferential, radial orother suitably arranged corrugations, or indentations or in some cases we i may employ a laminated structure com-, posed of thin disks. 1

Although theinvention'is specially applicable to the securing of disks to wheel hubs as above set forth, it is also applicable in general to the coupling together of disks and similar members. 1 As the interfitting or inor the like on the various members form mutual bearing; surfaces which aiford proper support to take radial loads or torque and rotational strains, the securing bolts are therefore mainlyserve' to retain the various members against. lateral displacement.

Figure 1- is a transverse sectional view of a portion of a single disk wheel according to one embodiment of the invention,

Patented. Feb 3,1920.

7- 1 .fitting projections or bosses and a. nut on.

Fig. 1' is a vertical sectional view of a V Fig. 1 is a face or front view of the central part of the disk shown in 1 and 1". 5 Fig. 2 is a similar view to ig. 1 illustratin a modification in connection with a sing e disk wheel.

Fig. 3 is a transverse sectional view of a double disk wheel constructed according to one embodiment of the inyention.

Fi 4 is a similar view to. Fig. 3 show.- in t e two disks separated from each other. Fig. 5 is afragmentary perspective view partly in section, looking at the exterior face of the outer disk shown in Fig. 3.

Fig. 6 isa similar view to Fig. 4 illustrating disks of laminated construction or formation. Figs. 7 and 8 are sectional views showing two constructions of the aforesaid retaming or hearing rings employed in conjunction with the disks.

A represents the hub flange forming part of any suitable or standard hub A". B represents the disk in the single disk wheel shown in Figs. 1, 2, 7 and 8, and B, C represent the two disks of the double disk wheel shown in Figs. 3, 4 and 6 the disks being constructed of pressed steel. D is the tire carrying rim secured to or formed on each disk in any appropriate manner and as shown in Figs. 1 and 3 it may be provided With a detachable tire retaining flange D secured to the outer circumferential part of thedisk B by a suitable number of bolts D3.

' The disk B is made-dished or conical with a vertical central part which latter is provided with a central aperture B to fit.over the hub and with a number of cylindrical projections 0r bosses B on the side thereof, and a number of cylindrical projections or bosses B on the other side thereof. Preferably three bosses are arranged at equidistant points on each side of the disk those B on one side being a'rran ed in diflerent radial planes from those. 2 on the other side (see Fig. 1). The said bosses may be formed by hot or cold pressing of the-metal at the central part of the disk or they ma be made separate and attached to thedisk by riveting, welding or otherwise. The hub flange Ais machined to provide three bosses forming cylindrical recesses 'A" equally is aced apart which are adapted to receive t e projections or bosses B when-the cen- -tral part of. the disk is placed adjacent to and in contact with the hub flange. In

order to secure the disk B and the hub flange A together, bolts 'E are provlded whichextend through holes A in the hub flange coraigial with the recesses A and through the bosses B, the heads of'the bolts bearing against a suita bly formed surface (1n the shaped .two sides of its central 'extremities of the bosses B In the modification shown in'Fi 2, the disk instead of being provided wit bosses on both sides of its central part is provided with suitable number of bosses B on one side onl which fit into correspondingly osses or recesses A in the hub flange so as to be secured by retaining. bolts 'E havingl nuts E for hearing against the metal a jacent to the bosses or projections B.

The interfitting cylindrical bosses B and recesses A aflord ample bearing surface to take the radial load and 'the bosses project laterally from the disk suflioiently to provide a satisfactory length of bearin to allow for the torque during rotation anfi to prevent shearing of the bolts. I

In the double disk wheel shown in Figs. 3 and 4, the hub flange A and the disk B are similar to the hub flange and the disk described in connection with Fig. 1, inasmuch that the disk provided with bosses B on one side of fitting-into recesses A in the hub flange and with bosses B on the other sid of theoentral part thereof. It will be observed that the diameter of the bosses B is greater than that of the bosses B. The second disk G is similar to the disk B and has similar bosses C and- C at the art respectively. The position of the disk however, is re- 1 versed so that its inclined or'dished portion may be directed in the opposit direction to the'corresponding part of the 'disk B, and its smaller bosses C are adapted to fit into the larger rojections or bosses'B on the disk- B, whi e its larger projections or'bosses Gr are adapted to surround-or fit'over the smaller bosses B on the disk B; The two disks are shown separated in Fig. 4, while in Fig. 3, they are shown with their central parts in contact and the interfit't'edbosses B, C fitted in the recesses A in the hub flange, in which position the disks are secured by retainin bolts E ex tending through therecesses and the interfitting bosses B C and having nuts E bearing on the metal adjacent to the boss C, and also by retaining boltsF passing throu h holes A in the hub flange and the inter tting bosses B C and ha ing nuts F which bear against the ends of the bosses B C. By means of this arrangement the bosses providea larg each boss gives considerable support to its rough the' e. bearing surface and adjacent boss. The distance t disks at. their bosses, may be as at, or greater than the distance through t e usual thickened disks, and while there is a considerable saving in'weight, there is no diminution of strength; in fact this type of wheel is stron' inasmuch as there-is no driving or loa duty on the bolts, the chief function of the latter being to hold the disks on to the hub. The disks B and C being similar in construction are readily interchangeable.

The modification shown in Fig. 6 is similar as regards arrangement of interfitting bosses to the modification shown in Fig. 3, but instead of employing plain disks, I provide disks which are of laminated structure or formation.

' Instead of the nuts E and F bearin against thev outer surface of the disks ig. 1) or the disk C (Fig. 3) -I may provide a retaining orbearing ring G (see Figs 7 and 8) which is formed with bosses or recesses G that fit over the projections B or C, while the portion of the ring adjacent to the bosses B may be flat as shownin Fig. 7 to constitute a bearin surface for the nuts F or these portions 0 the ring may be provided with bosses or projections Gr to fit into the bosses B, so that the bolts E may pass through the interfitting bosses B, G? as shown in Fig. 8. The use of-the ring G- materially increases the strength of and imparts rigidity to the construction. The reta ning or bearing rin G may be constructed of pressed steel or itmay be formed by casting.

.that' they may rotate as What I claim and desire to secure by Letters Patent of the United States is 1.- Means-for coupling disks together so a unit-comprising interen'gaging, laterally-extending, cylindris 'tiallyas'descri cal projections and recesses, arranged respectively on overlapping members, and

bolts extending through said projections and recesses and preventing lateral separation of the disks.

2. A disk wheel comprising a hub provided with an annular flange, a disk overlapping said flange, said flange and disk being provided with inter-engaging tubular proections and recesses forming relatively elongated, laterally-extending, bearing surfaces to take up torque orrotational stresses during rotation, and bolts extending through said sleeve-like bearings and-preventing lateral separation of the hub and disk,

3. A disk wheel comprising ahub provided with an annular flange, a disk overlapping said flange, said flange and disk being provided with inte'nengaging projec-l tions and recesses forming relatively elon gated, laterally-extending,bearing surfacesto take up torque or tational stresses during rotation, a second disk held a ainst movement radially of the first said disk by engagement of laterally-extending, tubular 1 rojections thereon engaging-similar proections on the other disk-and hub, and

means for preventing lateral separation of said parts. 4. A disk wheel comprising a hub, a disk a'daptedto bee-attached to the hub and 'provided with a plurality of laterally-extending, tubular projections on both faces, a second disk providedon both faces with simi-, lar projections adapted to engagethose on the first said disk, thgough said engaging rojections.

disk for disk w eels having lateral bosses 'on both sides thereof, those on one side being of greater diameter than those on and bolts extending I theother side so that the larger bosses on Y one slde can if desired be fitted over the smaller bosses on an adj acent disk substan- FRANK JOHN KEEGAN, I 

